Matematika buktikan bahwa 1-cos² A + sin² A tan² A = tan² A​

aftonkihnulv – March 05, 2023

buktikan bahwa 1-cos² A + sin² A tan² A = tan² A​

1-cos² A + sin² A tan² A = tan² A

= sin² A + sin² A tan² A = tan² A

= sin² A(1 + tan² A) = tan² A

= sin² A × sec² A = tan² A

= sin² A × 1 / cos² A = tan² A

= tan² A

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